laughlin



(No Model.) 2 Sheets-Sheet 1.

J. L. LAUGHLIN.

I DOUBLE PLOW. v No. 297,815. Patented Apr. 29, 1884.

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2 Sheets8heet 2.

(No Model.)

J. L-. LAUGHLIN; DOUBLE PLOW.

Patented Apr. 29, 1884;

lul

UNTTE STATES PATENT OFFICE.

JOHN L. LAUGHLIN, or LOUISVILLE, KENTUCKY, ASSIGNOR TO B. r. AVERY & sons, or SAME PLACE.-

DOUBLE PLOW.

SPECIFICATION formingpart or Letters Patent No. 297,815, dated April 29, 1884.

Application filed February 14,1854. (No model.)

To el; whom it may concern:

Be it known that I, JOHN L. LAUGHLIN, of Louisville, in the county of Jefferson and State of Kentucky, have invented a new and useful Double Sugar-Land Plow and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this application.

My invention relates to certain new and useful improvements in what I denominate a double sugar-land plow, and as to most of its features is more especially adapted to this species of implement, though, as to somepoints therein, my invention may be applied to plows designed forusessomewhat different from those for which the implement herein described and shown has been gotten up.

My invention consists in the novel devices and combinations of devices which will be found hereinafter more fully described, and which will be most particularly pointed out in the claims of this specification.

To enable those skilled in the art to which my invention relates to understand and practice the same, I will now proceed to more fully explain the several novel features of my. im-

proved implement, referring by letters to the accompanying drawings, forming part of this specification, and in which I have illustrated my invention as carried out in that form which is the best now known to me, and in which I have so far practiced it.

In the drawings, Figure 1 is a side view or elevation of one of my improved implements called a double sugarland plow. Fig. 2 is a top view of the same. Fig. 3 is a bottom view of the same. Fig. 4 is a vertical crosssection of the same at the line 00 m of Fig. 1, drawn on a somewhatlarger scale. Fig. 5 is a vertical cross-section at the line y y of Fig. 1,

same scale as Fig. 4;. Fig. 6 is a partial cross-' section or detail view, same scale, showing merely the arrangement of the beam, standard, &c. Fig. 7 is a detail or skeleton view, same scale as Fig. 1, showing the beam-standard in side view; and Fig. 8 is a detail view of the draft-rod detached.

7 V In the several figures the same part will be found designated by the same letter of refer- 5o ence.

The beam of the plow is duplexthat is, it 1s composed, as shown, of two bars or beams, O O, which are arranged side by side about parallel with each other, and a short distance apart during the greater part of their length, but spring close together at their forward ends,

where they are held in union by a suitablyformed metallic cap-piece, c, secured to them.

The metallic standard a, which is 'prefera- 6o bly of the curved form shown, firmly supports the shares (or double point) D and the moldboards B B, is formed orprovided with ahead or cap, (6 and, being rather narrow (or platelike) in cross-section, fits and is confined in be- '6 5 E is the gage-wheel,

The frog h h is by preference welded each 7 part to the landsides'G G, between which lies the standard, these parts being securely bolted together, as shown, and the landsides G being extended rearwardly and carrying the lower end of the frame z, in which is hung the vertically-adjustable axle of the carryingwheel 0, before alluded to.

b is the colter, (which is of the circular disklike type,) the hub of which is supported properly by angle-irons or metallic frames (1 8 5 d, depending from either side of the plowbeam and secured thereto, as shown. (See Figs. 1 and 5.)

H is a device which I term the Frudder.

It is arranged in rear of the lower portion of 0 the plow-beam, and projects centrally downward to a point some distance below the level of the base of theplow, and has its lowermost part made knife-edged or chisel-like by preference. able, if deemed expedient, and its function is to enter the earth some distance below the line of deepest penetration of the plow-point,

It maybe made vertically adjustfor the purpose of steering or guiding the plow, in a manner to be presently explained.

The gage-wheel E is, as usual, made vertieally adjustable, for the well-known purpose of gaging the depth of cut of the plow.

As will, of course,have been secn,so far the plow proper, with its single point D flaring from a point centrally beneath the beam in each direction, and with its duplicate moldboardsB B,is what is termed double-nosed, and hence adapted to turn a furrow to each side and cut trenches, and is more especially designed for this sort of work.

K is the draft-rod, which is composed (see Fig. 8) of a rearniost double or link-like portion and a forward single or rod'like section, the two coupled together at Z, and the back end of the link-like portion attached to a staple or eye, m, which projects from the under side of the beam a short distance in rear of the standard (I. The forward end of this duplex draft-rod K carries a ring, 01, to which the draft-power may be applied, and the double or link-like construction of its back half or portion permits it to straddle or yoke around both the plow-standard a and the disklike colter b, all as clearly indicated in the drawings.

As will be readily understood, the implcment herein described and shown is designed for use mainly in the cultivation of sugar-cane, being specially adapted to splitting and opening the ridges in which the cane is planted.

In the use of the implement shown, the gage-wheel E having been set or adjusted properly, and the carrying-wheel 0 having been adjusted to the right position, the doub1enosed point D and mold-boards B Bwill penctrate theearth and turn over adouble furrow, forming perfectly the trench in or splitting the ridges usually made for planting the sugarcane. In doing such work such a nosed plow is apt to cut to one side of and run out of the ridge the crown of which is being split open or trenched, on account of the unevenness of the resistance offered to the opposite edges of the double share, and the uneven resistance to the two mold-boards that is likely to occur; and especially is this liable to happen if the draft of the team be not kept in perfect line with the central line of the ridge. To overcome successfully this diificulty in the practical working of all implements of the kind shown, I have combined with the plow the rudder H,whicl1 offers little or no resistance to the forward movement or progress of the plow, but presents to the resistance of the earth, sidewise of the implement, its broad and deeply-inserted sides in such manner as to check any inclination of the plow to run out of the ridge at either side of the latter. Thus this rudder-like device,while not materially increasing the draft of the plow, operates successfully to keep the plow in place laterally, or in the proper working line of travel against any tendency of an uneven pressure on the opposite working-faces of the share and moldboards to turn the plow out of its proper course. Of course this feature of my improved implement may be used with advantage on any double-nosed plow, and may be employed in a plow which may not have in it the other features or points of my invention.

It will be seen that by forming the plowbeam of two bars or pieces, (or by making it duplex.) as shown and described, not only am I enabled to produce a light, strong, and in other respects desirable beam, but I also gain these great desiderata, viz: I can successfully use a colter of much greater size or diameter than is possible where a solid beam (through which the colter cannot penetrate) is used, and I can securely combine, in a most economical and desirable manner, the standard and beam, the former ascending between the parts of the latter, between which it is securely clamped and held, the head a giving ahorizontal. hearing on the tops of the two pieces 0 O of the beam,while cross-bolts some distance below this bearing-point operate in conjunction therewith to produce a secure attachment of the standard to the beam. Iconsider this feature of the duplex or double beam as of great importance in myimproved implement, and this point or part of my invention, it will be seen, can be used with great advantage in other types of plows than that shown, as well as in other double-nosed plows not embracing the other features of my invention.

The opportunity afforded by the duplex or centrally-open beam for an increased size of colter will be readily perceived by a glance at Figs. 1 and 5, from which it will be seen that the colter Z) can extend clear up above the level of the top of the plow-beam; and it will of course be understood that all the mechanical qualities and effects of the duplex beam might be gained by the use of a single beam or bar simply cut through or slotted out vertically at the proper localities for the accommodation of the standard and colter, in the manner described; butIdeem the formation of the beam of two pieces with the intervening space, as shown, the better form in which to carry out this feature of my invention.

It will be seen that by making the frog in two pieces, h h, welded to the landsides G G, as explained, and then bolting on the standard (and also the rudder H) intermediate of the landsides, as shown, a very simple, strong, light, and durable construction results, in which the plowshare and mold-boards are easily and securely held in place, and in which compactness, strength, and economy of manufacture are combined. The extension backward of the landsides G, and their combination, as shown, with the pendent bars 2' z, in which are adjustably journaled the opposite ends of the axle of the carrying-wheel 6, enable me, it will be seen, to make this portion of the implement light, strong, and simple.

Of course many variations may be made in the mere details of the construction of the implement shown without either changing essentially its general character or materially varying it as to any one of its novel features; and the sizes, proportions, and precise relationships of the parts may of course be varied more or less Without departing from the spirit of my invention.

WVhat I claim herein as new, and desire to secure by Letters Patent, is-

1. In combination with a double or duplex beam, a revolving colter arranged to rotate partially within the slot or space afforded for its accommodation between the two parts of said duplex beam, all substantially in the manner and for the purpose set forth.

2. In combination with the beam and standard of adouble-nosed plow, the landsidesG G, extending rearwardly from the lower portion of the standard, the vertical bars z i, secured at their lower portions to the landsides and at their upper ends to the beam, and a carryingning partially within said beam, of the landsides G G,\having frogs h h, the bars 6 13, a carrying-wheel, e, and the fixed rudder-plate H, all substantially as shown and described.

In testimony whereof I have hereunto set my hand this 4th day of February, 1884.

I JOHN L. LAUGHLIN. Witnesses:

ALFRED F. MOORE, H. S. IRWIN. 

